How do allergy shots work?

Allergy shots help relieve allergy symptoms by helping your body fight the allergen. When you get shots of the allergen, your body starts making antibodies to the allergen. These antibodies help block the effects of the allergen the next time you have contact with it. Because the antibodies block the way your body reacts to the allergen, your allergy symptoms become less severe. After many allergy shots, you might start to get relief from your allergy symptoms. This relief will last for a long time.